CN205340595U - A compound laminar industry membrane for water treatment - Google Patents
A compound laminar industry membrane for water treatment Download PDFInfo
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- CN205340595U CN205340595U CN201521036012.6U CN201521036012U CN205340595U CN 205340595 U CN205340595 U CN 205340595U CN 201521036012 U CN201521036012 U CN 201521036012U CN 205340595 U CN205340595 U CN 205340595U
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- layer
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- composite bed
- bed type
- rete
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- 239000012528 membrane Substances 0.000 title claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 150000001875 compounds Chemical class 0.000 title claims abstract description 6
- 238000010612 desalination reaction Methods 0.000 claims abstract description 28
- 229920000642 polymer Polymers 0.000 claims abstract description 13
- 230000009471 action Effects 0.000 claims abstract description 11
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 11
- 229920000728 polyester Polymers 0.000 claims abstract description 11
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 7
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 5
- 125000003277 amino group Chemical group 0.000 claims abstract description 3
- 210000004379 membrane Anatomy 0.000 claims description 54
- 239000002131 composite material Substances 0.000 claims description 23
- 210000002469 basement membrane Anatomy 0.000 claims description 21
- 238000009826 distribution Methods 0.000 claims description 12
- 239000000178 monomer Substances 0.000 claims description 7
- 238000001223 reverse osmosis Methods 0.000 claims description 6
- 229920000768 polyamine Polymers 0.000 claims description 4
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical group O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 3
- 150000001298 alcohols Chemical class 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 claims description 2
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical group CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 claims description 2
- GTACSIONMHMRPD-UHFFFAOYSA-N 2-[4-[2-(benzenesulfonamido)ethylsulfanyl]-2,6-difluorophenoxy]acetamide Chemical compound C1=C(F)C(OCC(=O)N)=C(F)C=C1SCCNS(=O)(=O)C1=CC=CC=C1 GTACSIONMHMRPD-UHFFFAOYSA-N 0.000 claims description 2
- 101710130081 Aspergillopepsin-1 Proteins 0.000 claims description 2
- 102100031007 Cytosolic non-specific dipeptidase Human genes 0.000 claims description 2
- 230000004907 flux Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 150000001263 acyl chlorides Chemical group 0.000 abstract 1
- 150000002009 diols Chemical class 0.000 abstract 1
- 229920005906 polyester polyol Polymers 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 47
- 239000000243 solution Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 3
- 230000003373 anti-fouling effect Effects 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- -1 acetyl halide compound Chemical class 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 150000004820 halides Chemical group 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 150000004986 phenylenediamines Chemical group 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model provides a compound laminar industry membrane for water treatment, including base film, buffer layer, desalination layer and antipollution layer, the buffer layer is arranged in the base film with between the desalination layer, the antipollution layer is located the outside on desalination layer, wherein: the base film include casting film liquid and coat in the casting film liquid of polyester non -woven fabrics, the buffer layer is the rete that forms through inseparable chemical action between polymer polyester diol and polyester polyols's solute molecule, the desalination layer is the rete that forms through inseparable chemical action between the reactive compound solute molecule that has two acyl chlorides groups and two amino groups at least, the antipollution layer is the cross -linking agent and contains the rete that at least two reactive hydroxy polymer effect formed. The utility model discloses an it can be good to receive filter membrane flux, salt rejection and resistance tocrocking, and can carry out the backwash of intermittent type formula to it.
Description
Technical field
This utility model relates to membrane separation technique, is specifically related to a kind of composite bed type industrial membrane processed for water.
Background technology
The operation pressure limit of the NF membrane in membrane separation technique is 0.2～1.0MPa, molecular cut off is in the scope of 200～2000, compared with ultrafilter membrane and reverse osmosis membrane, owing to it has higher water flux and high rejection under relatively low operation pressure, therefore it is widely used in the water separating the industries such as concentration, drink water purifying, waste water reclaiming and processes.
But, in the application process of actual industrial, it is subject to fouling membrane, Membrane cleaning cost and cleaning process to factors such as itself damages of film, make current industrialization NF membrane ubiquity antifouling property and chemical-resistance poor, stability is bad, and its operating cost is higher, and service life is short.
For the problems referred to above, current improvement project includes simply by changing formula system or coating anti-pollution layer etc., and in above-mentioned improvement project, on the one hand it is difficult to ensure that balance between membrane permeation performance and antipollution, chemical-resistance, on the other hand coating agree to occur in actual moving process to come off, the problem such as swelling and consumption, and due to the structure of desalination layer itself and aperture response, membrane contaminant in film processing procedure cannot be removed by surface clean, clean cost substantially to increase, affect the service life of NF membrane.
Utility model content
In view of this, this utility model provides a kind of composite bed type industrial membrane processed for water, it is intended to optimize the performance of industry NF membrane.
The technical solution adopted in the utility model particularly as follows:
A kind of composite bed type industrial membrane processed for water, including basement membrane, cushion, desalination layer and anti-pollution layer, described cushion is placed between described basement membrane and described desalination layer, and described anti-pollution layer is located at the outside of described desalination layer；Wherein:
Described basement membrane includes casting solution and the polyester non-woven fabric as basic unit, casting solution is coated on described polyester non-woven fabric, defines basement membrane；
Described cushion is the rete formed by close chemical action between the molecule of the solute one in aqueous phase, and the molecule of described solute one includes polymer polyester dihydroxylic alcohols and PEPA；
Described desalination layer is the rete formed by close chemical action between the molecule of solute two, and the molecule of described solute two includes the reactive compounds at least with two acid chloride groups and two amino groups.
Described anti-pollution layer is the rete that cross-linking agent is formed with the polymer effect containing at least two reactive hydroxyl.
In the above-mentioned composite bed type industrial membrane processed for water, the thickness of described basement membrane is 40～60 μm, and pore-size distribution is between 20～40nm.
In the above-mentioned composite bed type industrial membrane processed for water, the thickness of described cushion is 1～2 μm, and pore-size distribution is between 5～10nm.
In the above-mentioned composite bed type industrial membrane processed for water, the thickness of described desalination layer is 0.1～0.3 μm, and pore-size distribution is between 1～2nm.
In the above-mentioned composite bed type industrial membrane processed for water, the thickness of described anti-pollution layer is 0.3～0.5 μm, and pore-size distribution is between 3～5nm.
In the above-mentioned composite bed type industrial membrane processed for water, described cross-linking agent is glutaraldehyde solution.
In the above-mentioned composite bed type industrial membrane processed for water, described industrial membrane is NF membrane, the molecule of described solute one also includes polyamine monomer, and described anti-pollution layer is the rete that cross-linking agent is formed by crosslinked action with the polymer containing at least two reactive hydroxyl.
In the above-mentioned composite bed type industrial membrane processed for water, described industrial membrane is reverse osmosis membrane, the molecule of described solute one also includes m-diaminobenzene. class monomer, and described anti-pollution layer is the rete that cross-linking agent is formed by heat radiation or internally crosslinked mode effect with the polymer containing at least two reactive hydroxyl.
This utility model produces to provide the benefit that:
Industrial membrane of the present utility model, under original industry NF membrane system, improves the firmness between basement membrane and desalination layer, substantially increases the performance of desalination layer and the anti-pollution of protective layer and anti-chemical stability；Ensure flux simultaneously as the reduction of anti-pollution layer surface roughness, film hydrophilic surface groups is more, improves the antifouling property that film is overall；
Owing to there is cushion between basement membrane and desalination layer, greatly strengthen the firmness between desalination layer and basement membrane, thus the interval backwash that can realize in industry park plan, accelerate the cleaning of membrane contaminant, saved cleaning cost；In addition each layer raw material is industrialized product, cheap and easy to get, it is simple to industrialized production on a large scale.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, it is possible to be more completely more fully understood that this utility model.Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, and embodiment and explanation thereof are used for explaining this utility model, are not intended that improper restriction of the present utility model.
Fig. 1 is the structural representation of a kind of composite bed type industrial membrane processed for water of this utility model.
In figure:
1, basement membrane
2, cushion
3, desalination layer
4, anti-pollution layer.
Detailed description of the invention
Below in conjunction with drawings and Examples, the technical solution of the utility model is described in further detail.
For NF membrane, a kind of composite bed type industrial membrane processed for water as shown in Figure 1, including basement membrane 1 be coated on the cushion 2 of basement membrane, desalination layer 3 and anti-pollution layer 4 successively；The formation of this NF membrane is to realize mainly through following three-step approach as on the polyester non-woven fabric of basic unit:
The first step, is coated on polyester non-woven fabric by the casting solution containing hydrophilic additive PEG or MC, dry-wet phase inversion, obtains the polysulfones ultrafiltration membranes 1 of ground floor；
Second step, basement membrane 1 is carried out soaking and washing by hydrophilic solvent, compound water solution containing at least two reactive hydroxyl polymer polyester dihydroxylic alcohols and polyamine monomer is coated on basement membrane 1 and forms aqueous phase, after standing is dried, solute molecule is attached to surface equably, obtains the cushion 2 that hydrophilic modification polysulfones layer is formed by close chemical action with polyhydroxylated polymer；Then pour out liquid after contacting 10-30s with the multi-functional acetyl halide compound aqueous solution at least with two reactive acid halide group, by the solvent flashing on surface and after the solvent evaporation and interface polymerization reaction of 1-5min, obtain polyamide nanofiltration desalination layer 3；Adding the cohesive force between cushion 2 and desalination layer 3 on the one hand, avoiding secondary film causes the decline of NF membrane performance on the other hand；
3rd step, the certain density cross-linking agent of the surface-coated (glutaraldehyde solution) of the film obtained afterwards is completed at second step, by cross-linking agent and containing at least two reactive hydroxyl polymer generation crosslinked action, obtain the anti-pollution layer 4 of chemically-resistant solvent, excellent in stability.
Internal aperture is little, the big buffer-type membrane structure in film front and aperture, the film back side to adopt above-mentioned steps to obtain.Preferred as one, the parameter of NF membrane is:
Thickness as the ground floor of basement membrane 1 is 40～60 μm, and pore-size distribution is between 20～40nm；
Thickness as the second layer of cushion 2 is 1～2 μm, and pore-size distribution is between 5～10nm；
Thickness as the third layer of desalination layer 3 is 0.1～0.3 μm, and pore-size distribution is between 1～2nm；
Thickness as the 4th layer of anti-pollution layer 4 is 0.3～0.5 μm, and pore-size distribution is between 3～5nm.
Can be seen that, the ground floor aperture of composite bed type NF membrane of the present utility model is maximum, third layer aperture is minimum and the aperture of the second layer and the 4th layer is slightly smaller hole therebetween, what namely obtain is that internal aperture is little, the big buffer-type membrane structure of film front (anti-pollution layer 4) and hole, the film back side (basement membrane 1) footpath.
On the one hand, due to the chemical action between basement membrane 1 and cushion 2 and aperture gradual change, significantly reduce the film back pressure destruction for desalination layer 3, therefore in actual application, it can be realized interval backflushing and wash, significantly reduce operating cost；
Unreacted radical remaining in desalination layer 3 can be connected by chemistry or physical action with the strand of anti-pollution layer 4, additionally the cross-linked structure strand in desalination layer 3 can be interweaved with the part straight chain molecule in anti-pollution layer 4, hydrophilic cross-linking structure by the strand inierpeneirating network structure between desalination layer 3 and anti-pollution layer 4 and anti-pollution layer 4, have the advantages that chemically-resistant cleans at Practical Project, improve the operation stability of NF membrane.
Above-described embodiment is for NF membrane, but this utility model is claimed is the version of industrial membrane of composite bed type, however it is not limited to NF membrane or reverse osmosis membrane.If the forming process obtaining above-mentioned industry NF membrane is applied to Industrial reverse osmosis film, only need to replace monomer classification in second step, and in the 4th step, slightly adjust the technique of anti-pollution layer 4, and as: in second step, the monomer of addition is replaced with phenylenediamine by polyamine；In the third step, the mode such as heat radiation, interior crosslinking is adopted to obtain anti-pollution layer 4.But, for choosing previously for each layer thickness and aperture, when being applied to reverse osmosis membrane, the lower limit of the range of choice as far as possible.
Above in association with accompanying drawing, embodiment of the present utility model having been explained, accompanying drawing herein is used to offer and is further appreciated by of the present utility model.Obviously; the foregoing is only this utility model preferably detailed description of the invention; but protection domain of the present utility model is not limited thereto; any be to one skilled in the art can readily occur in, essentially without departing from change of the present utility model or replacement, be also all contained within protection domain of the present utility model.
Claims (8)
1. the composite bed type industrial membrane processed for water, it is characterised in that including basement membrane, cushion, desalination layer and anti-pollution layer, described cushion is placed between described basement membrane and described desalination layer, and described anti-pollution layer is located at the outside of described desalination layer；Wherein:
Described basement membrane includes casting solution and the polyester non-woven fabric as basic unit, casting solution is coated on described polyester non-woven fabric, defines basement membrane；
Described cushion is the rete formed by close chemical action between the molecule of solute one, and the molecule of described solute one includes polymer polyester dihydroxylic alcohols and PEPA；
Described desalination layer is the rete formed by close chemical action between the molecule of solute two, and the molecule of described solute two includes the reactive compounds at least with two acid chloride groups and two amino groups；
Described anti-pollution layer is the rete that cross-linking agent is formed with the polymer effect containing at least two reactive hydroxyl.
2. the composite bed type industrial membrane processed for water according to claim 1, it is characterised in that the thickness of described basement membrane is 40～60 μm, and pore-size distribution is between 20～40nm.
3. the composite bed type industrial membrane processed for water according to claim 1, it is characterised in that the thickness of described cushion is 1～2 μm, and pore-size distribution is between 5～10nm.
4. the composite bed type industrial membrane processed for water according to claim 1, it is characterised in that the thickness of described desalination layer is 0.1～0.3 μm, and pore-size distribution is between 1～2nm.
5. the composite bed type industrial membrane processed for water according to claim 1, it is characterised in that the thickness of described anti-pollution layer is 0.3～0.5 μm, and pore-size distribution is between 3～5nm.
6. the composite bed type industrial membrane processed for water according to claim 1, it is characterised in that described cross-linking agent is glutaraldehyde solution.
7. the composite bed type industrial membrane processed for water according to claim 1, it is characterized in that, described industrial membrane is NF membrane, the molecule of described solute one also includes polyamine monomer, and described anti-pollution layer is the rete that cross-linking agent is formed by crosslinked action with the polymer containing at least two reactive hydroxyl.
8. the composite bed type industrial membrane processed for water according to claim 1, it is characterized in that, described industrial membrane is reverse osmosis membrane, the molecule of described solute one also includes m-diaminobenzene. class monomer, and described anti-pollution layer is the rete that cross-linking agent is formed by heat radiation or internally crosslinked mode effect with the polymer containing at least two reactive hydroxyl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521036012.6U CN205340595U (en) | 2015-12-14 | 2015-12-14 | A compound laminar industry membrane for water treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521036012.6U CN205340595U (en) | 2015-12-14 | 2015-12-14 | A compound laminar industry membrane for water treatment |
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| Publication Number | Publication Date |
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| CN205340595U true CN205340595U (en) | 2016-06-29 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106512729A (en) * | 2016-11-21 | 2017-03-22 | 杭州易膜环保科技有限公司 | High-desalinization-rate reverse osmosis composite membrane and preparing method thereof |
| CN108568219A (en) * | 2017-03-08 | 2018-09-25 | 财团法人工业技术研究院 | Composite structure |
| CN110871038A (en) * | 2018-08-31 | 2020-03-10 | 帕尔公司 | Salt-tolerant porous media |
| CN115072904A (en) * | 2022-07-14 | 2022-09-20 | 重庆海通环保科技有限公司 | Reverse osmosis membrane for fractional reverse osmosis treatment of treatment liquid |
| CN116253397A (en) * | 2022-12-01 | 2023-06-13 | 南京水滴智能环保装备研究院有限公司 | Device and method for treating sewage with anti-pollution membrane |
-
2015
- 2015-12-14 CN CN201521036012.6U patent/CN205340595U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106512729A (en) * | 2016-11-21 | 2017-03-22 | 杭州易膜环保科技有限公司 | High-desalinization-rate reverse osmosis composite membrane and preparing method thereof |
| CN106512729B (en) * | 2016-11-21 | 2019-02-19 | 杭州易膜环保科技有限公司 | A kind of equipment with high desalinization reverse osmosis composite membrane and preparation method thereof |
| CN108568219A (en) * | 2017-03-08 | 2018-09-25 | 财团法人工业技术研究院 | Composite structure |
| US10723893B2 (en) | 2017-03-08 | 2020-07-28 | Industrial Technology Research Institute | Composite structure |
| CN110871038A (en) * | 2018-08-31 | 2020-03-10 | 帕尔公司 | Salt-tolerant porous media |
| CN115072904A (en) * | 2022-07-14 | 2022-09-20 | 重庆海通环保科技有限公司 | Reverse osmosis membrane for fractional reverse osmosis treatment of treatment liquid |
| CN115072904B (en) * | 2022-07-14 | 2023-10-27 | 重庆海通环保科技有限公司 | Reverse osmosis membrane body for fractional reverse osmosis treatment of treatment fluid |
| CN116253397A (en) * | 2022-12-01 | 2023-06-13 | 南京水滴智能环保装备研究院有限公司 | Device and method for treating sewage with anti-pollution membrane |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |